WO2024034818A1

WO2024034818A1 - Electronic device comprising coil device

Info

Publication number: WO2024034818A1
Application number: PCT/KR2023/008047
Authority: WO
Inventors: 민사일; 김수암
Original assignee: 삼성전자 주식회사
Priority date: 2022-08-12
Filing date: 2023-06-12
Publication date: 2024-02-15

Abstract

An electronic device comprising a coil device may be provided. Specifically, the electronic device comprises: a source for receiving electrical energy from the outside of the electronic device; a control circuit board for receiving the electrical energy from the source; and the coil device disposed between the source and the control circuit board. The coil device comprises: a magnetic body comprising a plurality of holes through which a plurality of lines connecting the source and the control circuit board pass; and a base capable of accommodating the magnetic body, wherein the base comprises a plurality of fixing pins to which the plurality of lines are respectively connected and which can be mounted on a PCB, and the impedance of each of the plurality of lines is set according to the number of turns of each of the plurality of lines.

Description

Electronic device comprising a coil device

Embodiments of the present disclosure relate to an electronic device including a coil device.

Electronic devices may be home appliances, such as air conditioners, refrigerators, washing machines, and vacuum cleaners, that are installed in homes and help users with housework. An electronic device may include a source and a control circuit board. Electronic devices can operate by receiving electrical energy through a source. The control circuit board can perform operation functions and communication functions using electrical energy received through a source, and set the rated voltage and rated current.

Input current may flow from the source to the control circuit board or output current may flow from the control circuit board to the source to perform power supply functions and communication functions. Input current or output current can generate noise. In particular, when the source and control circuit boards are connected by four or more lines, it may not be easy to place a magnetic material or coil to block noise.

An air conditioner according to an embodiment of the present disclosure includes a source that receives electrical energy from outside the air conditioner; A temperature sensor for measuring indoor temperature; a heat exchanger that receives refrigerant from the compressor of the outdoor unit and exchanges heat with the indoor air to cool the air; a fan that rotates and sucks in the air in the room to create a flow of air; A motor that rotates the fan and receives electrical energy from the source; and a coil device disposed between the source and the motor, wherein the coil device includes: a magnetic material including a plurality of holes through which each of a plurality of lines connecting the source and the motor passes; and a base capable of storing the magnetic material, the base including a plurality of pins to which each of the plurality of lines is connected, and each of the plurality of lines according to the number of turns of each of the plurality of lines. Impedance can be set.

An electronic device according to an embodiment of the present disclosure includes a source that receives electrical energy from outside the electronic device; a control circuit board that receives electrical energy from the source; and a coil device disposed between the source and the control circuit board, wherein the coil device includes: a magnetic material including a plurality of holes through which each of a plurality of lines connecting the source and the control circuit board passes; and a base capable of storing the magnetic material, wherein the base includes a plurality of fixing pins to which each of the plurality of lines is connected and can be mounted on a PCB, and the number of turns of each of the plurality of lines is The impedance of each of the plurality of lines may be set accordingly.

1 is a block diagram showing an electronic device according to an embodiment of the present disclosure.

Figure 2 is a diagram showing a toroid-shaped magnetic material.

Figure 3 is a diagram showing a blocking coil with two lines.

Figure 4 is a diagram showing a blocking coil with three lines.

Figure 5 is a diagram showing a blocking structure with four lines.

FIG. 6 is a diagram illustrating an electronic device operating in differential mode according to an embodiment of the present disclosure.

FIG. 7 is a diagram illustrating an electronic device operating in a common mode according to an embodiment of the present disclosure.

Figure 8 is a diagram showing a coil device according to an embodiment of the present disclosure.

Figure 9 is a diagram showing a coil device according to an embodiment of the present disclosure.

Figure 10 is a diagram showing a magnetic body of a coil device according to an embodiment of the present disclosure.

Figure 11 is a diagram showing a magnetic body of a coil device according to an embodiment of the present disclosure.

Figure 12 is a diagram showing the input/output and winding structure of a magnetic material according to an embodiment of the present disclosure.

Figure 13 is a diagram showing a method of winding a coil device according to an embodiment of the present disclosure.

FIG. 14 is a diagram illustrating a coil device including a plurality of sub-magnetic materials according to an embodiment of the present disclosure.

Figure 15 is a block diagram showing an air conditioner according to an embodiment of the present disclosure.

Terms used in the present disclosure will be briefly described, and an embodiment of the present disclosure will be described in detail.

The terms used in the present disclosure have selected general terms that are currently widely used as much as possible while considering the function in an embodiment of the present disclosure, but this may vary depending on the intention or precedent of a person working in the art, the emergence of new technology, etc. there is. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding embodiment of the present disclosure. Therefore, the terms used in this disclosure should be defined based on the meaning of the term and the overall content of this disclosure, rather than simply the name of the term.

Throughout the present disclosure, when a part “includes” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary. In addition, terms such as "... unit" and "module" described in the present disclosure refer to a unit that processes at least one function or operation, which may be implemented as hardware or software, or as a combination of hardware and software. there is.

Below, with reference to the attached drawings, embodiments of the present disclosure will be described in detail so that those skilled in the art can easily practice them. However, an embodiment of the present disclosure may be implemented in various different forms and is not limited to the embodiment described herein. In order to clearly describe an embodiment of the present disclosure in the drawings, parts that are not related to the description are omitted, and similar parts are assigned similar reference numerals throughout the present disclosure.

According to an embodiment of the present disclosure, an electronic device in which the generation of noise is reduced by disposing a coil circuit between a source and a control circuit board can be provided.

According to an embodiment of the present disclosure, an electronic device can be provided that solves noise or manufacturing problems caused by placing a magnetic material or coil by mounting a coil device on a PCB between a source and a control circuit board.

FIG. 1 is a block diagram showing an electronic device 100 according to an embodiment of the present disclosure.

The electronic device 100 may be a device that operates using electrical energy as power. The electronic device 100 may operate by receiving electrical energy from the outside. The electronic device 100 may be a home appliance. Home appliances may be devices installed in a home to help users with housework, such as air conditioners, refrigerators, washing machines, and vacuum cleaners. The electronic device 100 may include a source 110, a control circuit board 120, and a coil device 130.

The source 110 may receive electrical energy from outside the electronic device 100. In one embodiment, the source 110 may be a power supply unit that supplies power to the electronic device 100. For example, source 110 may be a plug circuit. However, the present invention is not limited thereto, and the source 110 may be a source that transmits current, voltage, and/or signal to the electronic device 110 . For example, the source 110 may transmit DC power or a digital signal to the electronic device 110. For example, the source 110 may transmit 310V DC voltage, GND voltage, 15V DC voltage, RPM (Revolution Per Minute) control signal, RPM feedback signal, low voltage DC, and control signal. . For example, source 110 may deliver 5V power and digital control signals of a digital circuit. Source 110 may transmit current, voltage, and/or signal to control circuit board 120 . The electronic device 100 may operate by receiving current, voltage, and/or signals through the source 110.

The control circuit board 120 may receive electrical energy from the source 110. The control circuit board 120 may supply electrical energy to the inside of the electronic device 100. The control circuit board 120 may include an operation circuit that performs the operation function of the electronic device 100. The control circuit board 120 may perform the operating function of the electronic device 100 using electrical energy. The control circuit board 120 may include a communication circuit that performs the communication function of the electronic device 100. The control circuit board 120 may perform the communication function of the electronic device 100 using electrical energy. Control circuit board 120 may have a specified impedance or a variable impedance. The control circuit board 120 can set the rated voltage and rated current using electrical energy.

The coil device 130 may be disposed between the source 110 and the control circuit board 120. The coil device 130 may connect the source 110 and the control circuit board 120. The coil device 130 may pass a plurality of

lines

141, 142, 143, and 144. A plurality of

lines

141, 142, 143, and 144 may pass through the coil device 130 while being wound in the form of a coil.

A plurality of

lines

141, 142, 143, and 144 may connect the source 110 and the control circuit board 120. An input current or an output current may flow through each of the plurality of

lines

141, 142, 143, and 144. The input current may be a current that flows from the source 110 to the control circuit board 120 to perform a power supply function and a communication function. The output current may be a current flowing from the control circuit board 120 to the source 110. In Figure 1, it is assumed that the source 110 and the control circuit board 120 are connected by four lines (141, 142, 143, and 144). However, it is not limited to this, and the source 110 and the control circuit board 120 may be connected by four or more lines.

Input current or output current flowing along the plurality of

lines

141, 142, 143, and 144 may generate noise. The coil device 130 may block noise generated from current flowing along the plurality of

lines

141, 142, 143, and 144.

Hereinafter, with reference to FIG. 2, a toroid-shaped magnetic material will be described.

Figure 2 is a diagram showing a toroid-shaped magnetic material.

The

magnetic materials

211, 212, 213, 214, and 215 may have toroidal-shaped upper and lower surfaces. The

magnetic materials

211, 212, 213, 214, and 215 may have upper and lower surfaces of various sizes. The

magnetic materials

211, 212, 213, 214, and 215 may have a pillar structure including an inner surface and an outer surface. The

magnetic materials

211, 212, 213, 214, and 215 may have various heights. The magnetic material 211 may have a core. The core may be a space between the central hole on the upper surface of the magnetic material (211, 212, 213, 214, 215) and the central hole on the lower surface of the magnetic material (211, 212, 213, 214, 215). The

magnetic materials

211, 212, 213, 214, and 215 may be ferrite magnetic materials.

The

magnetic materials

211, 212, 213, 214, and 215 can block common mode (CM) noise. The

magnetic materials

211, 212, 213, 214, and 215 may be coils for blocking common mode noise. The

magnetic materials

211, 212, 213, 214, and 215 may be arranged in the electronic device so that a plurality of lines pass through the cores of the

magnetic materials

211, 212, 213, 214, and 215. The

magnetic materials

211, 212, 213, 214, and 215 can block noise generated from current flowing in a line passing through the core.

The

magnetic materials

211, 212, 213, 214, and 215 may have a structure corresponding to two lines or three lines of the electronic device. The

magnetic materials

211, 212, 213, 214, and 215 may have a core with a diameter capable of surrounding the input and output lines of the electronic device. When surrounding the input line and output line of an electronic device, the magnetic material (211, 212, 213, 214, 215) has a thickness and height that can block noise generated from the input current flowing through the input line and the output current flowing through the output line. You can have it. The

magnetic materials

211, 212, 213, 214, and 215 may have cores with a diameter that can surround the input lines, output lines, and additional lines of the electronic device. When surrounding the input line, output line, and additional line of an electronic device, the

magnetic material

211, 212, 213, 214, and 215 has a thickness capable of blocking noise generated from the input current, output current, and current flowing through the additional line. and height.

The

magnetic materials

211, 212, 213, 214, and 215 may not be easily mounted on a printed board assembly (PBA) or printed circuit board (PCB) included in an electronic device. Additionally, it may not be easy for the

magnetic materials

211, 212, 213, 214, and 215 to perform a noise blocking function for four or more lines.

Hereinafter, a coil that blocks noise generated from current passing through two lines will be described with reference to FIG. 3.

Figure 3 is a diagram showing a blocking coil with two lines.

The blocking coil may include a first coil 310 and a second coil 320. The first coil 310 may be connected to the first line of the electronic device. The second coil 320 may be connected to a second line of the electronic device. The first coil 310 and the second coil 320 may be mounted on a PBA or PCB included in the electronic device. The first coil 310 and the second coil 320 may be spaced apart by a specified distance and wound along a toroid-shaped core. The first coil 310 and the second coil 320 may be wound in opposite directions.

The first coil 310 and the second coil 320 can block noise generated by current flowing through the first line and the second line. The first coil 310 and the second coil 320 may be choke coils that block common mode noise. The first coil 310 and the second coil 320 can block noise in a designated frequency band. The first coil 310 and the second coil 320 may have set impedance values. The first coil 310 and the second coil 320 may be wound by a specified number of turns. The number of turns of the first coil 310 and the number of turns of the second coil 320 may be set according to the blocking frequency band of the blocking coil and the set impedance of the blocking coil.

Hereinafter, a coil that blocks noise generated from current passing through three lines will be described with reference to FIG. 4.

Figure 4 is a diagram showing a blocking coil with three lines.

The blocking coil may be connected to the first line 410, second line 420, and third line 430 of the electronic device. The first line 410, the second line 420, and the third line 430 may wrap around the core of the blocking coil. The blocking coil wrapped around the first line 410, the second line 420, and the third line 430 may be mounted on a PBA or PCB included in the electronic device.

The blocking coil wrapped around the first line 410, the second line 420, and the third line 430 blocks the current flowing through the first line 410, the second line 420, and the third line 430. It is possible to block noise caused by . The blocking coil surrounded by the first line 410, the second line 420, and the third line 430 may be a choke coil that blocks common mode noise.

3 and 4, the blocking coil that blocks common mode noise may not be easy to operate as a coil that blocks noise generated in four or more lines due to the structure of the choke coil.

Hereinafter, a structure for blocking noise generated from four or more lines will be described with reference to FIG. 5.

Figure 5 is a diagram showing a blocking structure with four lines (521, 522, 523, and 524).

The blocking structure 510 may have a physical structure other than a coil. The blocking structure 510 may be a magnetic material. The blocking structure 510 may be a ferrite magnetic material. The blocking structure 510 may be arranged to bind the four

lines

521, 522, 523, and 524.

The connection portion 520 can connect four

lines

521, 522, 523, and 524. The connection unit 520 can connect four

lines

521, 522, 523, and 524 to the PCB. The connection portion 520 may be a wire harness.

The blocking structure 510 may be disposed adjacent to the connection portion 520. The blocking structure 510 may be mounted directly in front of the connection portion 520 to allow all four

lines

521, 522, 523, and 524 to pass.

The blocking structure 510 may not be easily mounted on a printed board assembly (PBA) or printed circuit board (PCB) included in an electronic device. Additionally, the blocking structure 510 may be installed in front of the connecting portion 520 so that it is adjacent to the connecting portion 520, thereby deteriorating the noise blocking function. Additionally, the blocking structure 510 is bulky compared to the coil, so it may not be easy to place it inside the electronic device.

Hereinafter, noise in differential mode (DM) will be described with reference to FIG. 6.

FIG. 6 is a diagram showing the electronic device 600 operating in differential mode according to an embodiment of the present disclosure. The electronic device 600 operating in differential mode may include a noise source 610, an internal circuit 620, and a power source 630.

The differential mode may be a mode in which the noise current 640 flows through the same path as the current flowing by energy supply from the power source 630. The noise current 640 that generates differential mode noise may be a noise current flowing in the same path as the current of the power supply 630. Differential mode noise may be normal mode noise.

The noise source 610 may be a circuit, element, or electrical object inside the microwave device 600 that causes noise. The noise source 610 may have a neutral voltage (Vn). When the noise source 610 has a neutral voltage (Vn) and a noise voltage occurs between the power source 630 and the connected line, differential mode noise may occur.

The noise source 610 in differential mode may be connected in series with the line connected to the power source 630. The differential mode noise current 640 may flow in the same direction as the power current and generate noise in the line connected to the power source 630.

The direction in which noise is input from the differential mode noise source 610 and the direction in which the differential mode noise current 640 is output may be opposite to each other. Since the input direction of the noise source 610 and the output direction of the noise current 640 are opposite to each other, it can be called differential mode. Since the noise source 610 that inputs noise and the noise current 640 that outputs noise are unrelated to the ground 650 and noise occurs along a normal current path, it can be called normal mode. Noise current 640 occurring in differential mode may be shielded by an electromagnetic filter included in the internal circuit 620.

Hereinafter, noise in common mode (CM) will be described with reference to FIG. 7.

FIG. 7 is a diagram illustrating an electronic device operating in a common mode according to an embodiment of the present disclosure. The electronic device 600 operating in common mode may include a noise source 610, an internal circuit 620, and a power source 630.

The common mode may be a mode in which noise voltage occurs between the line connected to the power source 630 and the ground 650. In common mode, noise voltage may not occur between power lines connected to the power source 630.

The first common mode noise current 711 may be output from the first electrode of the power source 630. The second common mode noise current 712 may be output from the second electrode of the power source 630. A first common mode noise current 711 and a second common mode noise current 712 may be output from each of the anode and cathode of the power source 630. The first common mode noise current 711 and the second common mode noise current 712 may flow to the noise source 610 through the internal circuit 620. Since the directions in which the first common mode noise current 711 and the second common mode noise current 712 flow are both toward the noise source 610 via the internal circuit 620, they can be called common mode.

The first common mode noise current 711 and the second common mode noise current 712 are the first stray capacitance formed between the noise source 610 and the ground path 720 provided in the outer case of the electronic device 600 ( It may leak to the outside of the electronic device 600 through 731). The first stray capacitance 731 may be a parasitic capacitor formed between the noise source 610 and the ground path 720.

The ground path 720 may connect the outer case of the electronic device 600 to the ground 950. A second stray capacitance 732 may be formed between the outer case of the electronic device 600 and the ground 950, separately from the ground path 720. The second stray capacitance 732 may be a parasitic capacitor formed between the outer case of the electronic device 600 and the ground 650.

The first common mode noise current 711 and the second common mode noise current 712 leaked to the outside of the electronic device 600 may be combined to form the common mode noise current 740. Common mode noise current 740 may pass through ground 650 through second stray capacitance 732. The common mode noise current 740 may flow into the line to which the power source 630 is connected via the ground 650.

Hereinafter, the structure of a coil device including five lines according to an embodiment of the present disclosure will be described with reference to FIG. 8.

Figure 8 is a diagram showing a coil device according to an embodiment of the present disclosure. The coil device may include a base 810, a magnetic material 820, a plurality of

lines

831, 832, 833, 834, and 835, and a partition 850. The coil device can suppress common mode noise occurring in each of the plurality of

lines

831, 832, 833, 834, and 835. A structure that suppresses common mode noise can be designed according to the length of the magnetic material 820 and the spacing between the plurality of

lines

831, 832, 833, 834, and 835.

The base 810 may have a structure to accommodate the magnetic material 820. The base 810 may have a structure that supports the magnetic material 820. The base 810 may store a magnetic material 820. A groove or opening may be formed in the central portion of the base 810 to store the magnetic material 820. The base 810 may support the magnetic material 820 so that the magnetic material 820 maintains a designated position and direction.

The base 810 may include a plurality of fixing pins. The plurality of fixing pins may be made of a conductor such as metal. Each of the plurality of

lines

831, 832, 833, 834, and 835 may be connected to the plurality of fixing pins. Each of the plurality of fixing pins may be mounted on a PCB. Each of the plurality of fixing pins may be electrically connected to a wiring pattern on the PCB.

The magnetic material 820 may have a three-dimensional structure including an upper surface, a lower surface, and a side surface. The magnetic material 820 may be in a ribbon type. The length of the magnetic material 820 may be set according to the internal spatial structure of the electronic device including the coil device. The length of the magnetic material 820 may be set according to the number of

lines

831, 832, 833, 834, and 835 and the distance between the

lines

831, 832, 833, 834, and 835. The material of the magnetic body 820 can be set according to the impedance and frequency band to be implemented. The magnetic material 820 may be ferrite. The impedance of the coil device can be set depending on the length and material of the magnetic body 820. The frequency band of noise to be blocked can be set depending on the length and material of the magnetic body 820.

The plurality of

lines

831, 832, 833, 834, and 835 may be connected to input lines and output lines of the electronic device. The plurality of

lines

831, 832, 833, 834, and 835 may be extensions of input lines and output lines of an electronic device. The plurality of

lines

831, 832, 833, 834, and 835 may be four or more lines. FIG. 8 shows a case where there are five plurality of lines (831, 832, 833, 834, and 835). The plurality of

lines

831, 832, 833, 834, and 835 are the first line 831, the second line 832, the third line 833, the fourth line 834, and the fifth line 835. ) may include. A plurality of

lines

831, 832, 833, 834, and 835 may connect source and control circuit boards of an electronic device. An input current, an output current, or a communication signal may flow through each of the plurality of

lines

831, 832, 833, 834, and 835. For example, among the plurality of

lines

831, 832, 833, 834, and 835, an input current flows through the first line 831 and the second line 832, and the third line 833 and the fourth line ( An output current may flow through 834 and a communication signal may flow through the fifth line 835. The type and form of current flowing through each of the plurality of

lines

831, 832, 833, 834, and 835 may vary depending on the type and operation of the electronic device.

The surface of each of the plurality of

lines

831, 832, 833, 834, and 835 may be covered with an insulator. The surface of each of the plurality of

lines

831, 832, 833, 834, and 835 may be coated with an insulating material. Since the surfaces of each of the plurality of

lines

831, 832, 833, 834, and 835 are insulated, the plurality of

lines

831, 832, 833, 834, and 835 can be wound around the magnetic material 820.

A current having a magnitude greater than a specified value may flow through each of the plurality of

lines

831, 832, 833, 834, and 835. A current of 2 Amperes (A) or more may flow through each of the plurality of

lines

831, 832, 833, 834, and 835. Current related to power supply to the electronic device may flow through each of the plurality of

lines

831, 832, 833, 834, and 835. A current larger than the current flowing in an ultra-small transmission line or a thin film transistor (TFT) may flow through each of the plurality of

lines

831, 832, 833, 834, and 835.

The magnetic material 820 may include a plurality of holes through which each of the plurality of

lines

831, 832, 833, 834, and 835 passes. The plurality of holes include a first hole through which the first line 831 passes, a second hole through which the second line 832 passes, a third hole through which the third line 833 passes, and a fourth line 834. It may include a fourth hole through which the fifth line 835 passes, and a fifth hole through which the fifth line 835 passes. Each of the plurality of holes may be provided to be spaced apart from each other by the distance between the plurality of

lines

831, 832, 833, 834, and 835.

The partition wall 850 may be disposed within a groove or opening of the base 810. The partition wall 850 may separate each of the plurality of

lines

831, 832, 833, 834, and 835. The partition wall 850 can set the separation distance between the plurality of

lines

831, 832, 833, 834, and 835. The partition 850 may maintain the spacing between the plurality of

lines

831, 832, 833, 834, and 835. The partition wall 850 has a first line 831 and a second line 832, a second line 832 and a third line 833, a third line 833 and a fourth line 834, and a fourth line 834. It may be placed between line 834 and fifth line 835. The partition wall 850 may be made of an insulating material. The partition wall 850 may be formed by injecting an insulating material and hardening it into a shape that divides the groove or opening of the base 810. The injection molded product may be made of an insulating material and have a cell structure including a partition wall 850.

Each of the plurality of

lines

831, 832, 833, 834, and 835 may be wound around the magnetic material 820 a specified number of times while passing through each of the plurality of holes. In Figure 8, each of the plurality of

lines

831, 832, 833, 834, and 835 is shown to be wound around the magnetic material 820 three times while passing through each of the plurality of holes. However, the present invention is not limited to this, and each of the plurality of

lines

831, 832, 833, 834, and 835 may be wound around the magnetic material 820 one or more times while passing through each of the plurality of holes.

The impedance of each of the plurality of lines (831, 832, 833, 834, and 835) can be set according to the number of turns of each of the plurality of lines (831, 832, 833, 834, and 835). Impedance response characteristics according to frequency can be adjusted according to the number of turns (Ts) of each of the plurality of lines (831, 832, 833, 834, and 835). The coil device can be designed to shield the frequency band of noise to be shielded by adjusting the number of turns of each of the plurality of lines (831, 832, 833, 834, and 835).

Hereinafter, the structure of a coil device including 10 lines according to an embodiment of the present disclosure will be described with reference to FIG. 9.

Figure 9 is a diagram showing a coil device according to an embodiment of the present disclosure. The coil device may include a base 910, a magnetic material 920, a plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940, and a partition wall 950. The coil device can suppress common mode noise occurring in each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940. A structure that suppresses common mode noise can be designed according to the length of the magnetic material 920 and the spacing of each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940.

The base 910 may store a magnetic material 920. A groove or opening for storing the magnetic material 920 may be formed in the central portion of the base 910. The groove or opening of the base 910 of FIG. 9 may have a longer length than the groove or opening of the base 810 of FIG. 8.

The base 900 may include a plurality of fixing pins. Each of a plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 may be connected to the plurality of fixing pins. Each of the plurality of fixing pins may be mounted on a PCB. Each of the plurality of fixing pins may be electrically connected to a wiring pattern on the PCB.

The magnetic material 920 may have a three-dimensional structure including an upper surface, a lower surface, and a side surface. The magnetic material 920 may have a ribbon shape. The length of the magnetic material 920 may be set according to the internal spatial structure of the electronic device including the coil device. The length of the magnetic material 920 depends on the number of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, 940 and the number of

lines

931, 932, 933, 934, 935, It can be set according to the distance between 936, 937, 938, 939, 940). The length of the magnetic material 920 in FIG. 9 may be longer than the length of the magnetic material 820 in FIG. 8 . The material of the magnetic body 920 can be set according to the impedance and frequency band to be implemented. The magnetic material 920 may be ferrite. The impedance of the coil device can be set depending on the length and material of the magnetic body 920. The frequency band of noise to be blocked can be set depending on the length and material of the magnetic body 920.

The plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 may be four or more lines. Figure 9 shows a case where there are 10 plural lines (931, 932, 933, 934, 935, 936, 937, 938, 939, 940). However, it is not limited to FIGS. 8 and 9, and the plurality of

lines

831, 832, 833, 834, and 835 may be four or more. A plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 may connect source and control circuit boards of an electronic device. An input current, an output current, or a communication signal may flow through each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940. The type and form of current flowing through each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 may vary depending on the type and operation of the electronic device.

An insulator may cover the surface of each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940. The surface of each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 may be coated with an insulating material. The surface of each of the plurality of lines (931, 932, 933, 934, 935, 936, 937, 938, 939, 940) is insulated, so that the plurality of lines (931, 932, 933, 934, 935, 936, 937) are insulated. , 938, 939, 940) can be wound around the magnetic material (920).

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940. A current of 2 Amperes (A) or more may flow through each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940. A current related to power supply of an electronic device may flow through each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940. A current larger than the current flowing in an ultra-small transmission line or thin film transistor may flow through each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940.

The magnetic material 920 may include a plurality of holes through which each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 passes. Each of the plurality of holes may be arranged to be spaced apart from each other by the distance between the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940.

The partition wall 950 may be disposed within a groove or opening of the base 910. The partition 950 may separate the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940. The partition wall 950 may be made of an insulating material. The partition wall 950 may be formed by injecting an insulating material and hardening it into a shape that divides the groove or opening of the base 910.

Each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 may be wound around the magnetic material 920 a predetermined number of times while passing through each of the plurality of holes. In Figure 8, each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 is shown to be wound around the magnetic material 920 three times while passing through each of the plurality of holes. However, it is not limited to this, and each of the plurality of

lines

931, 932, 933, 934, 935, 936, 937, 938, 939, and 940 may be wound around the magnetic material 920 one or more times while passing through each of the plurality of holes. there is.

A plurality of lines (931, 932, 933, 934, 935, 936, 937, 938, 939, 940) A plurality of lines (931, 932, 933, 934, 935, 936, 937, 938, 939, 940) You can set each impedance. Impedance response characteristics according to frequency can be adjusted according to the number of turns of each of the plurality of lines (931, 932, 933, 934, 935, 936, 937, 938, 939, and 940). The coil device can be designed to shield the frequency band of noise to be shielded by adjusting the number of turns of each of the plurality of lines (931, 932, 933, 934, 935, 936, 937, 938, 939, 940).

Hereinafter, the ribbon-type magnetic material structure will be described with reference to FIG. 10.

FIG. 10 is a diagram showing a magnetic body 1010 of a coil device according to an embodiment of the present disclosure.

The magnetic material 1010 may include a first side that is long in one direction, a second side facing the first side, and a pillar portion connecting the first side and the second side. The first and second sides may have a rectangular shape with rounded corners. The length of the pillar portion may be set according to the number of lines through which the magnetic material 1010 is intended to pass and the spacing between the lines. The lengths of the first and second sides may be set according to the magnetic strength required for the magnetic material 1010 to have a desired noise blocking level.

The magnetic material 1010 may have a ribbon shape. The magnetic material 1010 having a ribbon shape may have a long length and a low height structure. The magnetic material 1010 having a ribbon shape may have a structure close to a rectangular parallelepiped. The magnetic material 1010 having a ribbon shape may be mounted on a PCB.

Grooves 1020 may be provided on the first and second surfaces. The groove 1020 can pass a plurality of lines. A plurality of lines may pass through the groove 1020 and be wound around the pillar a specified number of times. The impedance of each of the plurality of lines may be set according to the number of turns of each of the plurality of lines.

Hereinafter, various structures of ribbon-shaped magnetic materials will be described with reference to FIG. 11.

FIG. 11 is a diagram showing

magnetic materials

1110, 1120, 1130, and 1140 of a coil device according to an embodiment of the present disclosure.

The widths of the

magnetic materials

1110, 1120, 1130, and 1140 can be set in various ways. The width of the

magnetic materials

1110, 1120, 1130, and 1140 may be set according to the number of lines through which the

magnetic materials

1110, 1120, 1130, and 1140 are intended to pass and the spacing between the lines.

The length of the

magnetic materials

1110, 1120, 1130, and 1140 can be set in various ways. The length of the

magnetic materials

1110, 1120, 1130, and 1140 may be set according to the magnetic strength required for the

magnetic materials

1110, 1120, 1130, and 1140 to have a desired noise blocking level.

The

magnetic materials

1110, 1120, 1130, and 1140 may have a ribbon shape. The magnetic material 1010 having a ribbon shape may have a long length and a low height structure. The magnetic material 1010 having a ribbon shape may have a structure close to a rectangular parallelepiped. The magnetic material 1010 having a ribbon shape may be mounted on a PCB.

Hereinafter, the input/output and winding structure of the magnetic material will be described with reference to FIG. 12.

FIG. 12 is a diagram showing the input/output and winding structure of the magnetic material 1210 according to an embodiment of the present disclosure.

The magnetic material 1210 may have an input unit 1211 and an output unit 1212. A plurality of

lines

1221, 1222, and 1123 may pass through the input unit 1211. The plurality of

lines

1221, 1222, and 1123 may be wound around the pillar portion of the magnetic material 1210 connecting the input portion 1211 and the output portion 1212 a specified number of times. A plurality of

lines

1221, 1222, and 1123 may pass through the output unit 1212.

M lines

1221, 1222, and 1123 (M is a natural number of 4 or more) may be wound around the magnetic material 1210.

A common mode current with an alternating current component flowing between the input unit 1211 and the output unit 1212 may exist in each of the plurality of

lines

1221, 1222, and 1123. Each of the plurality of

lines

1221, 1222, and 1123 may have a coil structure. Each of the plurality of

lines

1221, 1222, and 1123 may have an inductance component depending on the permeability of the magnetic material 1210. Each of the plurality of

lines

1221, 1222, and 1123 may have an impedance component including resistance due to the loss characteristics of the magnetic material 121. Each of the plurality of

lines

1221, 1222, and 1123 may suppress or block the flow of current in a frequency band designated by an inductance component or an impedance component. The plurality of

lines

1221, 1222, and 1123 may have a choke coil structure that suppresses common mode noise generated from current.

The magnetic material 1210 may block common mode noise generated from the plurality of

lines

1221, 1222, and 1123. A common mode noise blocking coil can be implemented by the magnetic material 1210 and the winding structure of the plurality of

lines

1221, 1222, and 1123. The common mode noise blocking coil may suppress or block the flow of common mode current occurring in the plurality of

lines

1221, 1222, and 1123.

Hereinafter, two winding methods of the coil device will be described with reference to FIG. 13.

Coil devices can block or suppress common mode noise. The coil device can have two winding configurations to suppress common mode currents. In FIG. 13, after winding the

lines

1311 and 1321 around the

magnetic materials

1310 and 1320 of the coil device, two winding configurations are shown when looking at the input or output portion of the coil device. In addition, in FIG. 13, the direction in which the windings of the

lines

1311 and 1321 pass through the

magnetic materials

1310 and 1320 are assumed to have a constant direction based on the input and output lines, considering the input and output modes of the electronic device. .

In the first case, the line 1311 can be wound N times (N is a natural number) on one side of the pillar connecting the input and output portions of the magnetic material 1310. The pillar portion of the magnetic material 1310 may include a first portion and a second portion facing the first portion. The line 1311 may be inserted into the input portion of the magnetic material 1310 and then wound around the first portion of the pillar portion N times. The line 1311 may be extended to the output portion of the magnetic material 1310 after being wound N times around the first portion of the pillar portion. Line 1311 may be an input line through which an input current flows or an output line through which an output current flows. Line 1311 may connect the source and control circuit boards of the electronic device. In FIG. 13, only one line 1311 is shown wound when looking at the input or output part of the coil device. However, a plurality of lines including four or more lines may be wound on the magnetic material 1310. . Each of the plurality of lines may be wound around the first portion N times in the first direction.

In the second case, the line 1321 can be wound N times (N is a natural number) on both sides of the column connecting the input and output portions of the magnetic material 1320. The pillar portion of the magnetic material 1320 may include a first portion and a second portion facing the first portion. After the line 1321 is inserted into the input portion of the magnetic material 1320, the line 1321 may be wound N times in the first direction around the first portion of the pillar portion. The line 1321 may be wound around the first part of the column N times in a first direction and then around the second part N times in a second direction opposite to the first direction. The line 1321 may be extended to the output portion of the magnetic material 1320 after being wound around the second portion N times in the second direction. Line 1321 may be an input line through which an input current flows or an output line through which an output current flows. Line 1321 may connect the source and control circuit boards of the electronic device. In FIG. 13, only one line 1321 is shown wound when looking at the input or output part of the coil device. However, a plurality of lines including four or more lines may be wound on the magnetic material 1320. . Each of the plurality of lines may be wound around the first part N times in a first direction and around the second part N times in a second direction opposite to the first direction.

Hereinafter, the structure of the coil device having a plurality of magnetic materials will be described with reference to FIG. 14.

FIG. 14 is a diagram illustrating a coil device including a plurality of

sub-magnetic materials

1410 and 1420 according to an embodiment of the present disclosure.

The coil device may include a plurality of

sub-magnetic materials

1410 and 1420. FIG. 14 shows a structure in which a plurality of

sub-magnetic materials

1410 and 1420 are included in one base. However, the present invention is not limited to this, and a plurality of

sub-magnetic materials

1410 and 1420 may be provided on each of the plurality of bases.

Each of the plurality of

sub-magnetic materials

1410 and 1420 may have a ribbon shape. Each of the plurality of

sub-magnetic materials

1410 and 1420 may have an input unit, an output unit, and a pillar unit connecting the input unit and the output unit. Each of the plurality of

sub-magnetic materials

1410 and 1420 may be a magnetic material having substantially the same structure as the magnetic material described with reference to FIGS. 8 and 9 . The plurality of

sub-magnetic materials

1410 and 1420 may be arranged to be spaced apart from each other. The length of each of the plurality of

sub-magnetic materials

1410 and 1420 may be set differently. The plurality of

sub-magnetic materials

1410 and 1420 may include a first sub-magnetic material 1410 and a second sub-magnetic material 1420 having a longer length than the first sub-magnetic material 1410. However, it is not limited to this, and the length of each of the plurality of

sub-magnetic materials

1410 and 1420 may be set to be the same.

Each of the plurality of

sub-magnetic materials

1410 and 1420 may pass through at least a portion of the plurality of

lines

1411, 1412, 1413, 1421, 1422, and 1423. The first sub-magnetic material 1410 is a 1-1 line 1411, a 1-2 line 1412, and a 1-k ( k is a natural number of 3 or more) and can pass through line 1413. The second sub-magnetic material 1420 includes the 2-1st line 1421, the 2-2th line 1422, and the 2-l( l is a natural number of 3 or more) can pass through line 1423. The length of each of the plurality of

sub-magnetic materials

1410 and 1420 is determined by the number of lines passing through each of the plurality of

sub-magnetic materials

1410 and 1420 among the plurality of

lines

1411, 1412, 1413, 1421, 1422, and 1423, and It may be determined by the spacing between the lines passing through each of the plurality of

sub-magnetic materials

1410 and 1420. Lines passing through each of the plurality of

sub-magnetic materials

1410 and 1420 may be wound around pillars of the plurality of

sub-magnetic materials

1410 and 1420 in a coil shape.

The first sub-magnetic material 1410 can block common mode noise generated by current flowing through the 1-1 line 1411, the 1-2 line 1412, and the 1-k line 1413. The second sub-magnetic material 1420 can block common mode noise generated by current flowing through the 2-1 line 1421, the 2-2 line 1422, and the 2-k line 1423. The 1-1 line 1411, the 1-2 line 1412, and the 1-k line 1413 may be lines through which input current flows from the source of the electronic device to the control circuit board. The 2-1 line 1421, the 2-2 line 1422, and the 2-k line 1423 may be lines through which output current flows as a source from the control circuit board of the electronic device. When the coil device includes a plurality of

sub-magnetic materials

1410 and 1420, all common currents occurring on various paths formed by the plurality of

lines

1411, 1412, 1413, 1421, 1422, and 1423 can be suppressed. You can.

Hereinafter, the case of using a coil device in an air conditioner, such as an indoor unit of an air conditioner, will be described with reference to FIG. 15.

Figure 15 is a block diagram showing an air conditioner 1500 according to an embodiment of the present disclosure.

The air conditioner 1500 may be a device used to manage the air in the place where the air conditioner 1500 is installed to a state that is convenient for users to live in. The air conditioner 1500 can operate using electrical energy as power. The air conditioner 1500 can operate by receiving electrical energy from the outside. The air conditioner 1500 may include an air conditioner, an air purifier, an electric fan, and a ventilator. In particular, in the present disclosure, the air conditioner 1500 may refer to the indoor unit of an air conditioner. The air conditioner 1500 may be a device that conditions, cools, or heats air using circulation of refrigerant and air. The air conditioner 1500 includes an air circulation unit for circulating air, a source 1510, a motor 1520, a coil device 1530, a fan 1550, a heat exchanger 1560, and a temperature sensor 1570. It can be included.

The air conditioner 1500 can suck indoor air into the air conditioner 1500 through a fan 1550. The air sucked in by the air conditioner 1500 may pass through the heat exchanger 1560. Air may be cooled or heated while passing through the heat exchanger 1560. Accordingly, the room can be cooled or heated.

The temperature sensor 1570 can measure the indoor temperature. When the indoor temperature measured by the temperature sensor 1570 is higher than the standard upper limit temperature value or outside the standard temperature range, the air conditioner 1500 drives the motor 1520 to control the temperature and operates the fan 1550. can be rotated.

The heat exchanger 1560 can receive refrigerant from the compressor of the outdoor unit. The heat exchanger 1560 can cool the air by exchanging heat with indoor air.

The fan 1550 may suck indoor air while rotating. Air sucked through the fan 1550 may pass through the heat exchanger 1560. The air that has passed through the heat exchanger 1560 may be discharged again through the air conditioner 1500. In this way, the fan 155 may generate a flow of air while rotating.

The source 1510 may receive electrical energy from the outside of the air conditioner 1500. Source 1510 may be a plug circuit. Source 1510 may transfer electrical energy to motor 1520. The air management device 1500 may operate by receiving electrical energy through the source 1510.

The motor 1520 may rotate the fan 1550. The motor 1520 may receive electrical energy from the source 1510. The motor 1520 may provide power to force indoor air to flow so that heat exchange between air and refrigerant occurs in the heat exchanger 1560.

Coil device 1530 may be disposed between source 1510 and motor 1520. The coil device 1530 may connect the source 1510 and the motor 1520. The coil device 1530 may pass a plurality of

lines

1541, 1542, 1543, and 1544. A plurality of

lines

1541, 1542, 1543, and 1544 may pass through the coil device 1530 while being wound in the form of a coil.

A plurality of

lines

1541, 1542, 1543, and 1544 may connect the source 1510 and the motor 1520. Input current may flow through each of the plurality of

lines

1541, 1542, 1543, and 1544. The input current may be a current that flows from the source 1510 to the motor 1520 to supply electrical energy for driving the motor 1520. The size of the input current may be larger than the size of the current passing through the TFT circuit or transmission line of the electronic device. The input current may be approximately 2 amperes. In Figure 15, it is assumed that the source 1510 and the motor 1520 are connected by four lines (1541, 1542, 1543, and 1544). However, it is not limited to this, and the source 1510 and the motor 1520 may be connected by four or more lines.

Input current or output current flowing along the plurality of

lines

1541, 1542, 1543, and 1544 may generate noise. The coil device 1530 may block noise generated from current flowing along the plurality of

lines

1541, 1542, 1543, and 1544. The coil device 1530 may suppress the common current flowing in the plurality of

lines

1541, 1542, 1543, and 1544 through which currents greater than the current passing through the TFT circuit or transmission line of the electronic device flow. The coil device 1530 may block common mode noise generated by a common current flowing in the plurality of

lines

1541, 1542, 1543, and 1544.

The coil device according to the embodiment disclosed in this document can block common mode noise occurring in four or more lines. The coil device according to the embodiment disclosed in this document can be mounted on a PCB and can be easily used in an electronic device that uses four or more lines as input and output lines of the source.

An electronic device according to an embodiment of the present disclosure includes a source that receives electrical energy from outside the air conditioner; A temperature sensor for measuring indoor temperature; a heat exchanger that receives refrigerant from the compressor of the outdoor unit and exchanges heat with the indoor air to cool the air; a fan that sucks in the air in the room and generates a flow of air; A motor that rotates the fan and receives electrical energy from the source; and a coil device disposed between the source and the motor, wherein the coil device includes: a magnetic material including a plurality of holes through which each of a plurality of lines connecting the source and the motor passes; and a base capable of storing the magnetic material, the base including a plurality of pins to which each of the plurality of lines is connected, and each of the plurality of lines according to the number of turns of each of the plurality of lines. Impedance can be set.

In one embodiment, an insulator may cover the surface of each of the plurality of lines.

In one embodiment, each of the plurality of holes may be separated by a partition.

In one embodiment, the plurality of lines may be four or more.

In one embodiment, a current having a magnitude greater than a specified value may flow through each of the plurality of lines.

In one embodiment, the magnetic material may be of a ribbon type.

In one embodiment, the coil device may suppress common mode noise occurring in each of the plurality of lines.

In one embodiment, the magnetic material includes a first part and a second part facing the first part, and each of the plurality of lines extends N times (N is a natural number) in the first direction in the first part. It can be coiled.

In one embodiment, the magnetic material includes a first part and a second part facing the first part, and each of the plurality of lines extends N times (N is a natural number) in the first direction in the first part. It may be wound around the second portion N times in a second direction opposite to the first direction.

In one embodiment, the magnetic material includes a plurality of sub-magnetic materials spaced apart from each other, and each of the plurality of sub-magnetic materials may pass through at least a portion of the plurality of lines.

In one embodiment, the plurality of lines may be four or more.

In one embodiment, the magnetic material may be of a ribbon type.

An electronic device according to an embodiment of the present disclosure can reduce the generation of noise by disposing a coil circuit between a source and a control circuit board.

The electronic device according to an embodiment of the present disclosure can solve noise or manufacturing problems caused by placing a magnetic material or coil by mounting the coil device on a PCB between the source and control circuit boards.

Claims

In the air conditioner,

A source that receives electrical energy from outside the air conditioner;

A temperature sensor for measuring indoor temperature;

a heat exchanger that receives refrigerant from the compressor of the outdoor unit and exchanges heat with the indoor air to cool the air;

a fan that rotates and sucks in the air in the room to create a flow of air;

A motor that rotates the fan and receives electrical energy from the source; and

Comprising a coil device disposed between the source and the motor,

The coil device is,

a magnetic material including a plurality of holes through which each of a plurality of lines connecting the source and the motor passes; and

Includes a base capable of storing the magnetic material,

The base includes a plurality of pins to which each of the plurality of lines is connected, and

An air conditioner, characterized in that the impedance of each of the plurality of lines is set according to the number of turns of each of the plurality of lines.
According to claim 1,

An air conditioner, characterized in that an insulator covers the surface of each of the plurality of lines.
According to claim 1,

An air conditioner, characterized in that each of the plurality of holes is separated by a partition.
According to claim 1,

An air conditioner, characterized in that the plurality of lines are four or more.
According to claim 1,

An air conditioner, characterized in that a current having a magnitude greater than a specified value flows through each of the plurality of lines.
According to claim 1,

An air conditioner, characterized in that the magnetic material is of a ribbon type.
According to claim 1,

An air conditioner, wherein the coil device suppresses common mode noise occurring in each of the plurality of lines.
According to claim 1,

The magnetic body includes a first part and a second part facing the first part, and

An air conditioner, characterized in that each of the plurality of lines is wound around the first portion in a first direction N times (N is a natural number).
According to claim 1,

The magnetic body includes a first part and a second part facing the first part, and

Each of the plurality of lines is wound around the first part N times in a first direction (N is a natural number) and wound around the second part N times in a second direction opposite to the first direction. Air conditioner.
According to claim 1,

The magnetic material includes a plurality of sub-magnetic materials spaced apart from each other,

An air conditioner, characterized in that each of the plurality of sub-magnetic materials passes at least a portion of the plurality of lines.
In electronic devices,

A source that receives electrical energy from outside the electronic device;

a control circuit board that receives electrical energy from the source; and

A coil device disposed between the source and the control circuit board,

The coil device is,

a magnetic material including a plurality of holes through which each of a plurality of lines connecting the source and the control circuit board passes; and

Includes a base capable of storing the magnetic material,

The base includes a plurality of fixing pins to which each of the plurality of lines is connected and can be mounted on a PCB, and

An electronic device, characterized in that the impedance of each of the plurality of lines is set according to the number of turns of each of the plurality of lines.
According to claim 11,

An electronic device, characterized in that an insulator covers the surface of each of the plurality of lines.
According to claim 11,

An electronic device, characterized in that each of the plurality of holes is separated by a partition.
According to claim 11,

An electronic device, characterized in that the plurality of lines is four or more.
According to claim 11,

An electronic device, characterized in that a current having a magnitude greater than a specified value flows through each of the plurality of lines.